Expend vs. Expand — What's the Difference?

Spend or use up (a resource such as money or energy)

To increase the size, volume, quantity, or scope of; enlarge

To lay out; spend

To express at length or in detail; enlarge on

To use up; consume

To open (something) up or out; spread out

(transitive) to consume, exhaust some resource

(Mathematics) To write (a quantity) as a sum of terms in an extended form.

To spend, disburse

To become greater in size, volume, quantity, or scope

To lay out, apply, or employ in any way; to consume by use; to use up or distribute, either in payment or in donations; to spend; as, they expend money for food or in charity; to expend time labor, and thought; to expend hay in feeding cattle, oil in a lamp, water in mechanical operations.

To speak or write at length or in detail

To be laid out, used, or consumed.

To open up or out; unfold

To pay out or disburse money.

(transitive) To change (something) from a smaller form or size to a larger one; to spread out or lay open.

Use up, consume fully;

(transitive) To increase the extent, number, volume or scope of (something).

Pay out;

(transitive) To express (something) at length and/or in detail.

To rewrite (an expression) as a longer, yet equivalent sum of terms.

To become, by rewriting, a longer, yet equivalent sum of terms.

To multiply both the numerator and the denominator of a fraction by the same natural number yielding a fraction of equal value

(intransitive) To change or grow from smaller to larger in form, number, or size.

(intransitive) To increase in extent, number, volume or scope.

(intransitive) To speak or write at length or in detail.

(intransitive) To feel generous or optimistic.

To lay open by extending; to open wide; to spread out; to diffuse; as, a flower expands its leaves.

To cause the particles or parts of to spread themselves or stand apart, thus increasing bulk without addition of substance; to make to occupy more space; to dilate; to distend; to extend every way; to enlarge; - opposed to contract; as, to expand the chest; heat expands all bodies; to expand the sphere of benevolence.

To state in enlarged form; to develop; as, to expand an equation. See Expansion, 5.

To become widely opened, spread apart, dilated, distended, or enlarged; as, flowers expand in the spring; metals expand by heat; the heart expands with joy.

Extend in one or more directions;

Become larger in size or volume or quantity;

Make bigger or wider in size, volume, or quantity;

Grow stronger;

Exaggerate or make bigger;

Add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing;

Expand the influence of;